160 lines
4.1 KiB
C
160 lines
4.1 KiB
C
/*
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* arch/ppc/platforms/4xx/redwood6.c
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*
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* Author: Armin Kuster <akuster@mvista.com>
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*
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* 2002 (c) MontaVista, Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/config.h>
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#include <linux/init.h>
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#include <linux/pagemap.h>
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#include <linux/platform_device.h>
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#include <linux/ioport.h>
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#include <asm/io.h>
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#include <asm/ppc4xx_pic.h>
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#include <linux/delay.h>
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#include <asm/machdep.h>
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/*
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* Define external IRQ senses and polarities.
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*/
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unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 7 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 8 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 9 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 0 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 1 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 2 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 3 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 4 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 5 */
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(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 6 */
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};
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static struct resource smc91x_resources[] = {
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[0] = {
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.start = SMC91111_BASE_ADDR,
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.end = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = SMC91111_IRQ,
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.end = SMC91111_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = 0,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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};
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static struct platform_device *redwood6_devs[] __initdata = {
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&smc91x_device,
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};
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static int __init
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redwood6_platform_add_devices(void)
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{
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return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
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}
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void __init
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redwood6_setup_arch(void)
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{
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#ifdef CONFIG_IDE
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void *xilinx, *xilinx_1, *xilinx_2;
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unsigned short us_reg5;
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#endif
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ppc4xx_setup_arch();
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#ifdef CONFIG_IDE
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xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
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/* init xilinx control registers - enable ide mux, clear reset bit */
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if (!xilinx) {
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printk(KERN_CRIT
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"redwood6_setup_arch() xilinxi ioremap failed\n");
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return;
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}
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xilinx_1 = xilinx + 0xa;
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xilinx_2 = xilinx + 0xe;
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us_reg5 = readb(xilinx_1);
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writeb(0x01d1, xilinx_1);
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writeb(0x0008, xilinx_2);
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udelay(10 * 1000);
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writeb(0x01d1, xilinx_1);
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writeb(0x0008, xilinx_2);
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#endif
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#ifdef DEBUG_BRINGUP
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bd_t *bip = (bd_t *) __res;
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printk("\n");
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printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
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printk("\n");
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printk("bi_s_version\t %s\n", bip->bi_s_version);
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printk("bi_r_version\t %s\n", bip->bi_r_version);
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printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
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bip->bi_memsize / (1024 * 1000));
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printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
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bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
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bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
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printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
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bip->bi_intfreq, bip->bi_intfreq / 1000000);
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printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
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bip->bi_busfreq, bip->bi_busfreq / 1000000);
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printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
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bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
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printk("\n");
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#endif
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/* Identify the system */
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printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
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printk(KERN_INFO
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"Port by MontaVista Software, Inc. (source@mvista.com)\n");
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device_initcall(redwood6_platform_add_devices);
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}
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void __init
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redwood6_map_io(void)
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{
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int i;
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ppc4xx_map_io();
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for (i = 0; i < 16; i++) {
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unsigned long v, p;
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/* 0x400x0000 -> 0xe00x0000 */
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p = 0x40000000 | (i << 16);
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v = STBx25xx_IO_BASE | (i << 16);
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io_block_mapping(v, p, PAGE_SIZE,
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_PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
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_PAGE_GUARDED);
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}
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}
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void __init
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platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
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unsigned long r6, unsigned long r7)
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{
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ppc4xx_init(r3, r4, r5, r6, r7);
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ppc_md.setup_arch = redwood6_setup_arch;
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ppc_md.setup_io_mappings = redwood6_map_io;
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}
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